Graco HIGH-FLO 243737, Instructions Manual, Page: 15 / 40

309136 15
Maintenance
Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 13.
Check the tightness of the packing nut (12) weekly.
Shut off the pump and relieve pressure before check-
ing the packing nut. The nut should be tight enough to
stop leakage, about 27–34 N
S
m (20–25 ft-lb). Over-
tightening will compress and damage the packings and
cause the pump to leak.
CAUTION
Always flush the pump before any fluid can dry in it.
Always stop the pump at the bottom of its stroke to
prevent the fluid from drying on the piston rod and
damaging the throat packings.
Read all other instruction manuals supplied with your
pump and with all accessories you add to the system.
Monitor the fluid supply carefully. If air is sucked into
the pump due to an empty supply container, the pump
will accelerate quickly and can damage the pump
packings. If your pump begins running too fast, shut it
off immediately. Refill the supply container and prime
the pump to remove all air from the fluid line. In an
air-powered system, the accessory pump runaway
valve automatically senses when a pump is running
too fast and shuts off the air to stop the pump.
01411
12
Torque to 27–34 N
S
m (20–25 ft-lb).
Fig. 7
1
1